Inexpensive Glow Plug Solenoid Replacement
Posted: Fri May 09, 2014 11:05 am
Okay, I bought this Chinese solenoid for $10, and it seems pretty solid. The only bad part is the bolts are imperial, and I just hate having two sets of spanners to work on a used car. I don't want to change the lugs on my wires to accommodate the larger bolts.
I realized that if I file the threads off the bolts, I can recut the studs with metric threads. Here we go:
Note that I bent the mounting bracket out of the way first, to make room for filing and cutting threads. Next, I cut threads in the stud with a 6mm x 1.0 die:
Fits the original nuts:
I decided the bolts didn't need to be so long, so ground them shorter:
The finished mod, with the mounting bracket bent flat:
I made an adapter to go from the coil stud to a blade, to plug in the actuator wire:
The Chinese solenoid, transplanted to the Delica:
So that's how you replace a failed glow plug relay solenoid for $10, without modifying the Delica. If you happen to get a $350 replacement solenoid for Christmas, you can swap it in.
I realized that if I file the threads off the bolts, I can recut the studs with metric threads. Here we go:
Note that I bent the mounting bracket out of the way first, to make room for filing and cutting threads. Next, I cut threads in the stud with a 6mm x 1.0 die:
Fits the original nuts:
I decided the bolts didn't need to be so long, so ground them shorter:
The finished mod, with the mounting bracket bent flat:
I made an adapter to go from the coil stud to a blade, to plug in the actuator wire:
The Chinese solenoid, transplanted to the Delica:
So that's how you replace a failed glow plug relay solenoid for $10, without modifying the Delica. If you happen to get a $350 replacement solenoid for Christmas, you can swap it in.